18429186121 has 8 divisors (see below), whose sum is σ = 19048063104. Its totient is φ = 17819757840.

The previous prime is 18429186109. The next prime is 18429186131. The reversal of 18429186121 is 12168192481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18429186121 - 2⁷ = 18429185993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18429186131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2358210 + ... + 2366011.

It is an arithmetic number, because the mean of its divisors is an integer number (2381007888).

Almost surely, 2^18429186121 is an apocalyptic number.

It is an amenable number.

18429186121 is a deficient number, since it is larger than the sum of its proper divisors (618876983).

18429186121 is an equidigital number, since it uses as much as digits as its factorization.

18429186121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724351.

The product of its digits is 55296, while the sum is 43.

The spelling of 18429186121 in words is "eighteen billion, four hundred twenty-nine million, one hundred eighty-six thousand, one hundred twenty-one".